John Oldach is an actor, and has appeared in two TV series episodes. He guest starred as Frank in a 1991 episode of NBC time travel series 'Quantum Leap.' The episode was called 'Piano Man.' The show ran for five seasons, before being canceled in 1993. Oldach also popped up in a 1989 episode of ABC dramedy 'Thirtysomething.' The episode was titled 'Success.'